Steel Seamless Piping and Tubing

Tubing Material Specification: SAE J524 (seamless low carbon steel tubing annealed for bending & flaring). Tensile strength 55,000 psi.
Pressure Ratings: Based on SAE Specification J1065 and using the more conservative Barlow formula where P=(2TxS)/O
P=burst pressure T=wall thickness S=tensile strength O=outside diameter.
Safety Factor: A 6:1 safety factor is used in table below for applications where "considerable" hydraulic shock and mechanical strain are present. For applications where hydraulic shock and mechanical strain is not considerable, a 4:1 safety factor (higher working pressures) may be carefully considered. For applications where hydraulic shock and mechanical strain is severe, an 8:1 safety factor (lower working pressures) should be applied.
Elevated Temperatures: Tubing design pressures have not been de rated for elevated operating temperatures.
Lengths: Tubing is stocked in 20 foot nominal lengths.

3/16.035 steel tubing
O.D.:3/16
Wall Thickness:0.035
I.D.:0.1175
Max Working Pressure (6:1 SF):3422 psi
Burst Pressure:20533 psi

1/4.035 steel tubing
O.D.:1/4
Wall Thickness:0.035
I.D.:0.18
Max Working Pressure (6:1 SF):2567 psi
Burst Pressure:15400 psi

5/16.049 steel tubing
O.D.:5/16
Wall Thickness:0.049
I.D.:0.215
Max Working Pressure (6:1 SF):2875 psi
Burst Pressure:17248 psi